/*
*  Copyright 2019-2020 Zheng Jie
*
*  Licensed under the Apache License, Version 2.0 (the "License");
*  you may not use this file except in compliance with the License.
*  You may obtain a copy of the License at
*
*  http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing, software
*  distributed under the License is distributed on an "AS IS" BASIS,
*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*  See the License for the specific language governing permissions and
*  limitations under the License.
*/
package me.zhengjie.modules.system.service.impl;

import me.zhengjie.modules.system.domain.Memo;
import me.zhengjie.utils.ValidationUtil;
import me.zhengjie.utils.FileUtil;
import lombok.RequiredArgsConstructor;
import me.zhengjie.modules.system.repository.MemoRepository;
import me.zhengjie.modules.system.service.MemoService;
import me.zhengjie.modules.system.service.dto.MemoDto;
import me.zhengjie.modules.system.service.dto.MemoQueryCriteria;
import me.zhengjie.modules.system.service.mapstruct.MemoMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import cn.hutool.core.lang.Snowflake;
import cn.hutool.core.util.IdUtil;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import me.zhengjie.utils.PageUtil;
import me.zhengjie.utils.QueryHelp;
import java.util.List;
import java.util.Map;
import java.io.IOException;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.LinkedHashMap;

/**
* @website https://el-admin.vip
* @description 服务实现
* @author superMan
* @date 2021-03-30
**/
@Service
@RequiredArgsConstructor
public class MemoServiceImpl implements MemoService {

    private final MemoRepository memoRepository;
    private final MemoMapper memoMapper;

    @Override
    public Map<String,Object> queryAll(MemoQueryCriteria criteria, Pageable pageable){
        Page<Memo> page = memoRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder),pageable);
        return PageUtil.toPage(page.map(memoMapper::toDto));
    }

    @Override
    public List<MemoDto> queryAll(MemoQueryCriteria criteria){
        return memoMapper.toDto(memoRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder)));
    }

    @Override
    @Transactional
    public MemoDto findById(Long memoId) {
        Memo memo = memoRepository.findById(memoId).orElseGet(Memo::new);
        ValidationUtil.isNull(memo.getMemoId(),"Memo","memoId",memoId);
        return memoMapper.toDto(memo);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public MemoDto create(Memo resources) {
        Snowflake snowflake = IdUtil.createSnowflake(1, 1);
        resources.setMemoId(snowflake.nextId()); 
        return memoMapper.toDto(memoRepository.save(resources));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void update(Memo resources) {
        Memo memo = memoRepository.findById(resources.getMemoId()).orElseGet(Memo::new);
        ValidationUtil.isNull( memo.getMemoId(),"Memo","id",resources.getMemoId());
        memo.copy(resources);
        memoRepository.save(memo);
    }

    @Override
    public void deleteAll(Long[] ids) {
        for (Long memoId : ids) {
            memoRepository.deleteById(memoId);
        }
    }

    @Override
    public void download(List<MemoDto> all, HttpServletResponse response) throws IOException {
        List<Map<String, Object>> list = new ArrayList<>();
        for (MemoDto memo : all) {
            Map<String,Object> map = new LinkedHashMap<>();
            map.put(" editTime",  memo.getEditTime());
            map.put(" sendTime",  memo.getSendTime());
            map.put(" userId",  memo.getUserId());
            map.put(" state",  memo.getState());
            map.put(" memoContext",  memo.getMemoContext());
            list.add(map);
        }
        FileUtil.downloadExcel(list, response);
    }
}